For steel-on-steel and steel-on-bronze spherical plain bearings and rod ends which are regularly relubricated following the initial lubrication, the basic rating service life is calculated in two steps.

• 对于钢与钢和钢与铜构成的球面滑动轴承和杆端关节轴承而言,如在初次润滑后能够定期补充润滑,则可分两步来计算基本额定使用寿命。